Manufacturers typically unveil their newest models in the fall. Retailers need to clear out the previous year's inventory to make room on the showroom floor.

Refrigerators are the outlier. New fridge models usually hit the market in the spring, making May the best month for refrigerator deals. The Holiday Weekend Strategy

Historically the biggest price drops for big-ticket items like ranges and dishwashers.

If you miss the fall transition, major holiday weekends are your next best bet. Retailers treat these as "inventory moving" events with deep discounts.